@mike todd Per the ad above:
The conversion uses original MG42/M53/MG3 belts, it does like tighter belts as the rounds tend to fall out of looser belts. The belts are easily pinched to tighten them up as you load the ammo.

Based on the last 6 month multiple Vickers side plates have gone for $13k - $14k with tripods
At RIA in August a Wilson went for $13.1 with the buyer premium included.
At Creek there was a C&R balloon gun for $14k
On gunbroker these are two were no reserve auctions. One needed built ($12k) the other is a complete gun ($13.1k)
https://www.gunbroker.com/item/711202785
https://www.gunbroker.com/item/717295373
Best of luck, there is little demand for ww1 style machine guns. Folks want modern machine gun currently.